U.S. patent application number 13/909976 was filed with the patent office on 2013-12-12 for connection terminal, coaxial electrical connector and wiring structure thereof.
This patent application is currently assigned to Kunshan Cocentra Electronics Co., Ltd.. The applicant listed for this patent is Yuntao Duan. Invention is credited to Yuntao Duan.
Application Number | 20130330968 13/909976 |
Document ID | / |
Family ID | 46902356 |
Filed Date | 2013-12-12 |
United States Patent
Application |
20130330968 |
Kind Code |
A1 |
Duan; Yuntao |
December 12, 2013 |
CONNECTION TERMINAL, COAXIAL ELECTRICAL CONNECTOR AND WIRING
STRUCTURE THEREOF
Abstract
Disclosed is a connection terminal, a coaxial electrical
connector and a wiring structure thereof which could ensure the
reliability of the electrical connection between the connection
terminal and a coaxial cable core. The connection terminal includes
a terminal body, two contact resilient pieces formed by bending and
extending from two sides of the terminal body, and a core
connection resilient arm extending from a rear end of the terminal
body in a direction remote from the contact resilient pieces. The
cross-section of the core connection resilient arm is essentially
"Z" shaped, and a contact surface for contacting the coaxial cable
core is formed on the core connection resilient arm. The contact
surface has an arcuate protrusion protruding in a direction remote
from the contact resilient pieces. The coaxial electrical connector
and the wiring structure thereof all include the above connection
terminal.
Inventors: |
Duan; Yuntao; (Kunshan,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Duan; Yuntao |
Kunshan |
|
CN |
|
|
Assignee: |
Kunshan Cocentra Electronics Co.,
Ltd.
Kunshan
CN
|
Family ID: |
46902356 |
Appl. No.: |
13/909976 |
Filed: |
June 4, 2013 |
Current U.S.
Class: |
439/586 ;
439/816 |
Current CPC
Class: |
H01R 4/489 20130101;
H01R 9/0518 20130101; H01R 4/00 20130101; H01R 13/62 20130101 |
Class at
Publication: |
439/586 ;
439/816 |
International
Class: |
H01R 4/00 20060101
H01R004/00; H01R 13/62 20060101 H01R013/62 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 12, 2012 |
CN |
201210191860.9 |
Claims
1. A connection terminal, comprising a terminal body, two contact
resilient pieces adapted for electrically contacting a
complementary terminal and a core connection resilient arm, wherein
the two contact resilient pieces are formed by bending and
extending from two sides of the terminal body, and wherein the core
connection resilient arm extends from a rear end of the terminal
body in a direction remote from the contact resilient pieces and
comprises a contact surface adapted for contacting a cable core,
the cross-section of the core connection resilient arm being
essentially "Z" shaped, the contact surface having an arcuate
protrusion protruding in a direction remote from the contact
resilient pieces.
2. The connection terminal according to claim 1, wherein the
terminal body comprises opposing interference protrusions at a
front end thereof.
3. The connection terminal according to claim 2, wherein the two
contact resilient pieces are mirror-symmetrically arranged, and the
opposing interference protrusions are mirror-symmetrically
arranged.
4. The connection terminal according to claim 1, wherein the
terminal body is of plate structure with a straight and flat plate
surface.
5. The connection terminal according to claim 1, wherein the
protruding direction of the arcuate protrusion is essentially
opposite to the extending direction of the contact resilient
pieces.
6. The connection terminal according claim 1, wherein the terminal
body defines a sight hole therethrough.
7. A coaxial electrical connector, comprising a connection terminal
according to claim 1, an insulating core member accommodating the
connection terminal therein and a shell arranged outside the
insulating core member; wherein the insulating core member
comprises an insulating body and an insulating core pressing block
extending upwards from one side of the insulating body, the
insulating body being provided with a cable core groove adapted for
accommodating a cable core of a coaxial cable and a
terminal-receiving chamber securing the connection terminal
therein, the cable core groove and the terminal-receiving chamber
being communicating with each other; wherein the core connection
resilient arm of the connection terminal is received in another
side of the insulating body opposite to a lower end of the
insulating core pressing block; and wherein the shell comprises a
mounting base and a bending portion extending upwards from one side
of the mounting base and accommodating the insulating core pressing
block therein, the mounting base accommodating the insulating body
of the insulating core member and the connection terminal therein,
the bending portion being forced to bend downwards together with
the insulating core pressing block during the coaxial electrical
connector being assembled with a core exposing end portion of the
coaxial cable with a cable core exposed, whereby the insulating
core pressing block presses the exposed cable core of the coaxial
cable therebelow, thus allowing the exposed cable core to be
electrically connected with the connection terminal and allowing
the shell to enclose and cover the insulating core member, the
connection terminal and the core exposing end portion of the
coaxial cable.
8. The coaxial electrical connector according to claim 7, wherein
the insulating core pressing block is provided with a first
engagement portion and a second engagement portion arranged from
the lower end to an upper end thereof, the first engagement portion
comprising a protrusion stage protruding inwardly towards the
insulating body.
9. The coaxial electrical connector according to claim 8, wherein
the second engagement portion of the insulating core pressing block
comprises a trapezoidal block formed at a top end thereof.
10. The coaxial electrical connector according to claim 7, wherein
the terminal body of the connection terminal comprises opposing
interference protrusions at a front end thereof.
11. The coaxial electrical connector according to claim 10, wherein
the two contact resilient pieces of the connection terminal are
mirror-symmetrically arranged, and the opposing interference
protrusions of the terminal body are mirror-symmetrically
arranged.
12. The coaxial electrical connector according to claim 7, wherein
the terminal body of the connection terminal is of plate structure
with a straight and flat plate surface.
13. The coaxial electrical connector according to claim 7, wherein
the protruding direction of the arcuate protrusion of the
connection terminal is essentially opposite to the extending
direction of the contact resilient pieces.
14. The coaxial electrical connector according claim 7, wherein the
terminal body of the connection terminal defines a sight hole
therethrough.
15. A wiring structure of a coaxial electrical connector,
comprising a coaxial electrical connector according to claim 7 and
a coaxial cable having a core exposing end portion with a cable
core exposed, the exposed cable core of the coaxial cable being
accommodated inside the cable core groove of the insulating core
member, the core exposing end portion of the coaxial cable together
with the connection terminal and the insulating core member being
enclosed inside the shell by bending the bending portion of the
shell and the insulating core pressing block accommodated inside
the bending portion, wherein the exposed cable core of the coaxial
cable is clamped between the insulating core pressing block of the
insulating core member and the terminal body and the core
connection resilient arm of the connection terminal, thereby
establishing an electrical connection between the exposed cable
core and the connection terminal.
16. The wiring structure according to claim 15, wherein the
insulating core pressing block of the insulating core member is
provided with a first engagement portion and a second engagement
portion arranged from the lower end to an upper end thereof, the
first engagement portion comprising a protrusion stage protruding
inwardly towards the insulating body.
17. The wiring structure according to claim 16, wherein the second
engagement portion of the insulating core pressing block comprises
a trapezoidal block formed at a top end thereof.
18. The wiring structure according to claim 15, wherein the
terminal body of the connection terminal comprises opposing
interference protrusions at a front end thereof.
19. The wiring structure according to claim 18, wherein the two
contact resilient pieces of the connection terminal are
mirror-symmetrically arranged, and the opposing interference
protrusions of the terminal body are mirror-symmetrically
arranged.
20. The wiring structure according to claim 15, wherein the
terminal body of the connection terminal is of plate structure with
a straight and flat plate surface.
21. The wiring structure according to claim 15, wherein the
protruding direction of the arcuate protrusion of the connection
terminal is essentially opposite to the extending direction of the
contact resilient pieces.
22. The wiring structure according claim 15, wherein the terminal
body of the connection terminal defines a sight hole therethrough.
Description
TECHNICAL FIELD
[0001] The present invention relates to a connection terminal, a
coaxial electrical connector and a wiring structure thereof,
particularly to a connection terminal, a coaxial electrical
connector and a wiring structure thereof, which are applicable to
radio frequency (RF) technical field.
BACKGROUND ART
[0002] A coaxial electrical connector for cable adapter is an
important part of RF technology. The coaxial electrical connector
of the prior art largely consists of a connection terminal, an
insulating core member and a shell, among which the connection
terminal and the insulating core member function as critical
components for stability of electrical connection. The stability of
the connection between a coaxial cable core and a connector is
mainly dependent on the structures of the connection terminal and
the insulating core member themselves and their particular assembly
structure with the cable. Therefore, the coaxial electrical
connector of the prior art usually employs the connection terminal
and the insulating core member of complex structures, wherein an
interference contact with the cable core is made by mechanical
crimp of the insulating core member and the connection terminal,
thereby achieving electrical connection between the connection
terminal and the cable core. However, the connection terminal and
the insulating core member of complex structures would inevitably
increase production cost, thus incurring a heavy burden of cost on
the producers, because the coaxial electrical connector is a mass
production part. Furthermore, the design of interference contact in
the prior art is prone to poor contact due to the fact that
conductive strands of the coaxial cable core tend to diverge,
resulting in open circuit. Hence, a connection terminal, a coaxial
electrical connector and a wiring structure thereof which could
ensure the reliability of the electrical connection between the
connection terminal and the cable core and meanwhile have simple
structure and low cost are desired.
SUMMARY OF INVENTION
[0003] An object of the present invention is to overcome the above
disadvantages in the prior art, and to provide a connection
terminal, a coaxial electrical connector and a wiring structure
thereof which could ensure the reliability of the electrical
connection between the connection terminal and the coaxial cable
core and meanwhile have simple structure and low cost.
[0004] The above object of the present invention is achieved by the
following technical solutions:
[0005] As a first aspect of the present invention, a connection
terminal includes a terminal body, two contact resilient pieces
adapted for electrically contacting a complementary terminal and a
core connection resilient arm. The two contact resilient pieces are
formed by bending and extending from two sides of the terminal
body. The core connection resilient arm extends from a rear end of
the terminal body in a direction remote from the contact resilient
pieces and includes a contact surface adapted for contacting a
cable core. The cross-section of the core connection resilient arm
is essentially "Z" shaped. The contact surface has an arcuate
protrusion protruding in a direction remote from the contact
resilient pieces.
[0006] In a preferred embodiment, the terminal body of the
connection terminal includes opposing interference protrusions at a
front end thereof. The two contact resilient pieces of the
connection terminal are mirror-symmetrically arranged, and the
opposing interference protrusions of the terminal body are
mirror-symmetrically arranged. The terminal body of the connection
terminal is of plate structure with a straight and flat plate
surface. The protruding direction of the arcuate protrusion of the
connection terminal is essentially opposite to the extending
direction of the contact resilient pieces. The terminal body of the
connection terminal defines a sight hole therethrough.
[0007] As a second aspect of the present invention, a coaxial
electrical connector includes a connection terminal as described in
the first aspect, an insulating core member accommodating the
connection terminal therein and a shell arranged outside the
insulating core member. The insulating core member includes an
insulating body and an insulating core pressing block extending
upwards from one side of the insulating body. The insulating body
is provided with a cable core groove adapted for accommodating a
cable core of a coaxial cable and a terminal-receiving chamber
securing the connection terminal therein. The cable core groove and
the terminal-receiving chamber communicate with each other.
[0008] In a preferred embodiment, the core connection resilient arm
of the connection terminal is received in another side of the
insulating body opposite to a lower end of the insulating core
pressing block. The shell includes a mounting base and a bending
portion extending upwards from one side of the mounting base and
accommodating the insulating core pressing block therein. The
mounting base accommodates the insulating body of the insulating
core member and the connection terminal therein. The bending
portion is forced to bend downwards together with the insulating
core pressing block during the coaxial electrical connector is
assembled with a core exposing end portion of the coaxial cable,
whereby the insulating core pressing block presses the cable core
of the coaxial cable therebelow, thus allowing the cable core to be
electrically connected with the connection terminal and allowing
the shell to enclose and cover the insulating core member, the
connection terminal and the core exposing end portion of the
coaxial cable.
[0009] In a preferred embodiment, the insulating core pressing
block is provided with a first engagement portion and a second
engagement portion arranged from the lower end to an upper end
thereof. The first engagement portion includes a protrusion stage
protruding inwardly towards the insulating body. The second
engagement portion includes a trapezoidal block formed at a top end
thereof.
[0010] As a third aspect of the present invention, a wiring
structure of a coaxial electrical connector includes a coaxial
electrical connector as described in the second aspect and a
coaxial cable having a core exposing end portion with a cable core
exposed. The exposed cable core of the coaxial cable is
accommodated inside the cable core groove of the insulating core
member. The core exposing end portion of the coaxial cable together
with the connection terminal and the insulating core member are all
enclosed inside the shell by bending the bending portion of the
shell and the insulating core pressing block accommodated inside
the bending portion. The exposed cable core of the coaxial cable is
thus clamped between the insulating core pressing block of the
insulating core member and the terminal body and the core
connection resilient arm of the connection terminal, thereby
establishing an electrical connection between the cable core and
the connection terminal.
[0011] The following advantages and effects are achieved by the
present invention: the cable core is clamped and compressed from
its both sides by the insulating core pressing block of the
insulating core member and the connection terminal with a "Z"
shaped core connection resilient arm after the shell being bent for
contacting and securing, therefore the reliability of the
electrical connection between the connection terminal and the cable
core could be improved, and the production cost could be
effectively reduced.
DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0012] FIG. 1 is a structural schematic diagram showing a
connection terminal of a preferred embodiment of the present
invention;
[0013] FIG. 2 is an exploded structural schematic diagram showing a
coaxial electrical connector of a preferred embodiment of the
present invention;
[0014] FIG. 3 is a structural schematic diagram showing a wiring
structure of a coaxial electrical connector of a preferred
embodiment of the present invention, in a status of each components
being mounted to their positions but the shell not being bent to
enclose them yet;
[0015] FIG. 4 is a structural schematic diagram showing a wiring
structure of a coaxial electrical connector of a preferred
embodiment of the present invention, in a status of the shell being
bent for enclosing (both the top view and the bottom view of the
wiring structure are shown in FIG. 4 for better exhibition);
and
[0016] FIG. 5 is a cross-sectional view of the wiring structure in
FIG. 4.
[0017] Wherein: [0018] 1--terminal body, 2--contact resilient
piece, 3--core connection resilient arm, 4--interference
protrusion, 5--sight hole, 6--insulating core member, 7--shell,
8--cable core groove, 9--terminal-receiving chamber, 10--insulating
core pressing block, 11--mounting base, 12--anti-disengagement
slot, 13--anti-disengagement block, 14--retainer column,
15--retainer cutout, 16--trunking, 17--first enclasp resilient
piece, 18--second enclasp resilient piece, 19--enclasp protrusion,
20--cable, 21--bending piece, 22--accommodating chamber,
23--connection terminal, 24--cable core, 25--insulating body,
26--first engagement portion, 27--second engagement portion,
28--protrusion stage, 29--contact surface, 30--bending portion.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The present invention will be further described in detail in
connection with embodiments and accompanying drawings.
[0020] As shown in FIG. 1, a connection terminal 23 according to a
preferred embodiment of the present invention includes a terminal
body 1, two contact resilient pieces 2 and a core connection
resilient arm 3. The terminal body 1, the contact resilient pieces
2 and the core connection resilient arm 3 are integrally formed
from a piece of metal material.
[0021] The contact resilient pieces 2 are arranged on the both
sides of the terminal body 1. Referring to FIGS. 2 and 4, the
contact resilient pieces 2 serve to establish electrical contact
with a complementary terminal of an electrical mating connector
after the connection terminal 23 is assembled together with an
insulating core member 6 and a shell 7 to form an electrical
connector. As shown in FIG. 1, the contact resilient pieces 2 are
formed by bending and extending from the two sides of the terminal
body 1, and they are commonly mirror-symmetrically arranged. The
core connection resilient arm 3 is located at a rear end of the
terminal body 1, and essentially extends obliquely upwards in a
direction remote from the terminal body 1. To ensure the
reliability of electrical contact between the connection terminal
23 and a cable core 24 of a coaxial cable 20, the cross-section of
the core connection resilient arm 3 is essentially "Z" shaped. More
specially, as shown in FIG. 1, the cross-section of the core
connection resilient arm 3 could be largely divided into three
parts. The first part is configured to further extend from the rear
end of the terminal body 1, which forms a first horizontal side
edge of the "Z" shaped cross-section and acts as a transitional
portion. The second part extends obliquely from the first part in a
direction remote from the terminal body 1. In reference to FIG. 1,
the second part obliquely extends toward the upper left above the
terminal body 1. The second part mainly functions as a resilient
support portion, which forms a middle section of the "Z" shaped
cross-section. It should be noted that the direction of the middle
section is reversed relative to the oblique direction of a
character "Z", and the first part and the second part are
correspondingly staggered. The third part extends essentially in
the same direction as the first part. It should also be noted that
the shape of the third part is similar to an arch, such that the
third part possesses an arcuate contact surface 29 which produces
an arcuate protrusion protruding in a direction away from the
contact resilient pieces 2 for contacting with the cable core 24,
thereby improving the reliability of the contact with the cable
core 24. As a preferred embodiment, the arcuate shape of the
arcuate contact surface 29 is part of a circular arc, and the
protrusion direction of the arcuate protrusion is essentially
opposite to the extending direction of the contact resilient pieces
2. As the contact surface 29 is arcuate, the pressing force
generated by the elasticity of the whole core connection resilient
arm 3 is concentrated at the contact area with the cable core 24,
thus making the electrical contact between the core connection
resilient arm 3 and the cable core 24 more stable.
[0022] As a preferred embodiment, a front end of the terminal body
1, i.e. the end remote from the core connection resilient arm 3, is
provided with two interference protrusions 4 which protrude in the
opposing directions. The two interference protrusions 4 are
commonly minor-symmetrically arranged.
[0023] As shown in FIG. 1, as a preferred embodiment, the terminal
body 1 is of plate structure with a straight and flat plate
surface, and defines a sight hole 5 therethrough for visual
alignment inspection of the cable core 24.
[0024] As shown in FIGS. 2-3, besides the connection terminal 23
described above, the coaxial electrical connector of the present
invention further includes an insulating core member 6 and a shell
7. It should be noted that the shell 7 is generally made of metal
material with high ductility such as gold plating copper, which is
due to the fact that the shell 7 would be utilized to enclose the
interior components including the insulating core member 6 and the
connection terminal 23 after assembly. The insulating core member 6
is generally made of insulating material such as plastic, which is
due to the fact that the insulating core member 6 would be utilized
to insulate the cable core 24 and the connection terminal 23 from
the shell 7.
[0025] The coaxial electrical connector of the present invention
refers to a coaxial electrical connector including the connection
terminal 23, the insulating core member 6 and the shell 7 of the
present invention and not being connected with a coaxial cable 20.
When the coaxial electrical connector has not been connected with
the coaxial cable 20, both the shell 7 and the insulating core
member 6 remain not being bent for enclosing, the coaxial
electrical connector retains a natural state as an independent
product. Therefore, the coaxial electrical connector in this
natural state will be described in detail as follows.
[0026] The insulating core member 6 includes an insulating body 25
and an insulating core pressing block 10. The interior of the
insulating body 25 is provided with a terminal-receiving chamber 9
for accommodating the connection terminal 23 and a portion of the
insulating core pressing block 10. It should be noted that, as
shown in FIG. 5, the insulating body 25 is supplied with a
communication structure which allows the contact resilient pieces 2
of the connection terminal 23 to contact a complementary terminal
outside the insulating core member 6.
[0027] In addition, there is provided a cable core groove 8
communicating with the terminal-receiving chamber 9 in the interior
of the insulating body 25, so that the cable core 24 of the coaxial
cable 20 could contact with the connection terminal 23 received in
the insulating core member 6. The insulating core pressing block 10
which is formed on one side of the insulating body 25 protrudes
outwards (upwards in the figure), and the insulating core pressing
block 10 is bent during assembly for clamping and compressing the
cable core 24 of the cable 20 in cooperation with the connection
terminal 23 and meanwhile insulating the cable core 24.
Accordingly, the configuration of the insulating core pressing
block 10 should match the shapes of the terminal-receiving chamber
9 and the cable core groove 8 after being bent. As a preferred
embodiment, the insulating core pressing block 10 is provided with
a first engagement portion 26 and a second engagement portion 27 of
different shapes arranged from a lower end to an upper end thereof,
wherein the first engagement portion 26 protrudes inwardly towards
the insulating core member 6 to produce a protrusion stage 28. The
advantageous effect of such a configuration lies in the fact that
the insulating core pressing block 10 after being bent could be
properly arranged above the connection terminal 23 and thereby
could solidly clamp the exposed cable core 24 of the coaxial cable
20 between the insulating core pressing block 10 and the connection
terminal 23 in cooperation with the terminal body 1 and the core
connection resilient arm 3 of the connection terminal 23, such that
a reliable electrical engagement of the cable core 24 and the
connection terminal 23 could be achieved. As a further preferred
embodiment, a trapezoidal block is formed at a top end of the
second engagement portion 27.
[0028] As a preferred embodiment, interference grooves
corresponding to the interference protrusions 4 of the connection
terminal 23 are provided inside the terminal-receiving chamber
9.
[0029] The shell 7 serves to accommodate and secure the insulating
core member 6 and an end portion of the coaxial cable 20 that
exposes the cable core 24 (hereinafter referred to as "core
exposing end portion"). As a result, the shell 7 includes a
mounting base 11 and a bending portion 30. The mounting base 11 is
of shell structure the shape of which is similar to that of the
insulating body 25 of the insulating core member 6, and includes an
accommodating chamber 22 and a trunking 16. As shown in FIGS. 2, 3
and 5, the top of the mounting base 11 is open, thereby
facilitating accommodation of the insulating core member 6 with the
connection terminal 23 received therein and the core exposing end
portion of the cable 20 into the accommodating chamber 22 and the
trunking 16. The bottom of the mounting base 11 is configured to be
a step structure which could allow the insulating core member 6 to
expose while still restrict the position of the insulating core
member 6. As a preferred embodiment, in order to attain better
securing of the insulating core member 6 to the shell 7 and prevent
relative rotation and displacement therebetween, anti-disengagement
slots 12 are defined in the outer side of the insulating body 25 of
the insulating core member 6, and anti-disengagement blocks 13 for
fitting into the anti-disengagement slots 12 are correspondingly
arranged on the inner side wall of the mounting base 11 of the
shell 7. Retainer columns 14 are arranged on the outer side of the
insulating body 25 of the insulating core member 6, and retainer
cutouts 15 are correspondingly provided in the side wall of the
mounting base 11 of the shell 7.
[0030] In order to effectively form a fixed connection with the
cable 20, the mounting base 11 of the shell 7 is provided with the
trunking 16 for surrounding and clamping the periphery of the cable
20, and the bending portion 30 of the shell 7 is provided with a
bending piece 21 for being disposed on the outer side of the
insulating core pressing block 10 after assembly and a first
enclasp resilient piece 17 and a second enclasp resilient piece 18
arranged on both sides of the bending piece 21. The size of the
first enclasp resilient piece 17 is smaller than the size of the
second enclasp resilient piece 18, and the second enclasp resilient
piece 18 is located between the first enclasp resilient piece 17
and the accommodating chamber 22. After the connection terminal 23,
the insulating core member 6 and the cable 20 being assembled, the
upper side of the cable 20 is covered by bending the bending piece
21, and the cable 20 and the trunking 16 are enclasped by the first
enclasp resilient piece 17 and the second enclasp resilient piece
18, such that the assembly could be completed.
[0031] As a preferred embodiment, enclasp protrusions 19 are formed
on the inner side of the first enclasp resilient piece 17 to
enclasp the cable 20 better.
[0032] The wiring structure composed of the coaxial electrical
connector of the present invention as described above and the
coaxial cable 20 would be described in detail in connection with
FIGS. 4-5.
[0033] The connection terminal 23 is arranged inside the
terminal-receiving chamber 9 of the insulating body 25 of the
insulating core member 6. The core connection resilient arm 3 of
the connection terminal 23 is located on one side of the insulating
body 25 opposite to the lower end of the insulating core pressing
block 10. The insulating core member 6 with the connection terminal
23 received therein is arranged in the accommodating chamber 22 of
the mounting base 11 of the shell 7. The core exposing end portion
of the coaxial cable 20 is arranged in the trunking 16 of the
mounting base 11 from the top of the mounting base 11 using the
sight hole 5 of the connection terminal 23 as alignment reference,
and the cable core 24 extends into the terminal-receiving chamber 9
of the insulating body 25 and contacts the connection terminal 23.
The shell 7 encloses the core exposing end portion of the cable 20
together with the connection terminal 23 and the insulating core
member 6 and secures them internally by bending the bending portion
30 downwards. The bending piece 21 is bent until it closely aligns
with the outer side of the insulating core pressing block 10. The
first enclasp resilient piece 17 coats the outer periphery of the
cable 20 closely, and the second enclasp resilient piece 18 coats
the outer side of the trunking 16 closely. The insulating core
pressing block 10 is arranged between the bending piece 21 and the
cable core 24 of the cable 20 in a bending status.
[0034] As shown in FIG. 5, the exposed cable core 24 of the coaxial
cable 20 is clamped between the insulating core pressing block 10
of the insulating core member 6 and the terminal body 1 and the
core connection resilient arm 3 of the connection terminal 23 after
being enclosed by the shell 7. More specially, the free end of the
cable core 24 is interferingly clamped between the protrusion stage
28 of the first engagement portion 26 of the insulating core
pressing block 10 and the terminal body 1, and the inner end of the
cable core 24 is elastically clamped between the small-sized second
engagement portion 27 of the insulating core pressing block 10 and
the core connection resilient arm 3 of the connection terminal 23.
The core connection resilient arm 3 applies a positive force to the
cable core 24 via its arcuate contact surface 29 in a direction
perpendicular to the extending direction of the cable core 24
(upwards in FIG. 5). Due to the design of clamping engagement, the
cable core 24 could be stably adhered onto the surface of the
connection terminal 23. The contact area between the cable core 24
and the connection terminal 23 could be significantly increased,
and the electrical connection therebetween could be more stable and
reliable. Therefore, the problem that contact area of the
interference contact in the prior art is easy to decrease and even
be disconnected due to the fact that conductive strands of the
cable core 24 tend to diverge could be solved.
[0035] In summary, the following advantages and effects are
achieved by the present invention: the connection terminal 23 of
the present invention has special design, simple structure, easy
manufacture process and low cost. By the cooperation of the special
structure of the connection terminal 23 with the insulating core
pressing block 10 of the insulating core member 6, the coaxial
electrical connector and the wiring structure thereof using the
connection terminal 23 of the present invention could achieve a
stable and reliable electrical engagement between the connection
terminal 23 and the cable core 24 of the coaxial cable, thereby
overcoming the disadvantages of the prior art such as electrical
disconnection and complicated structure.
[0036] However, the present invention is not limited to the above
embodiments. Any other changes, modifications, alternatives, etc.
without departing from spirit and principle of the present
invention should be considered as equivalent substitutes and
included within scopes of the present invention.
* * * * *